Selective signaling system.



R. N. HLL. SBLECTVE SIGNALING SYSTEM. APPLIOATIOH FILLE MAR. 21, 1912.

Lw. Patented .my 34,1914.

l.. plicaiion '.e'd March. 2i, w12, faral No. 24S l El1 4 To al?,@rf-imm may; @Unef/m Ee. il. known that 'L RALPH lxl. 'ln-m, Cilizfsn oftbe 'll'nt'cl States, residing al' Mani-- clair', in 'tbe @ou Gl :mtl55m 5 New Je" 15g l :n/@mul a cefzxin i -f mul '11i-sellsv mowmenbnSelective Sig-- nalng flju. E which the :following is al full, al fw? l,and exa/Cl; ilesflptmn This lm'enfim Mes 150 party lne'selective siggingsystems for twin flspzstching 01* like *gampss, in which plurality ofWay Stations f "Ebd upon a lin@ are Selectvsly min or Sending Statcm.

`s invention to provide Mn: t muil yeliabl'e 'mmms' 50 Gloss the n Vidald@ m 11 @Gm sting devces the circuits of the sig- Velay, and opemte u:ml cl'smmiactn Qi" a ssgatcheera: deg/limb@ se@ with *alle line Wires,ums jgmvie fm l'nanizznciu-,uit clsefl. all-@r alla reha-ase .vvclssngdevice at llhe, Way/*Stam lim; Said iii/leans consisting in 'theprovision if :flocking ccut for' h@ impulse relay- 'Wah inclusief,contacts @n vtbe apparatus lm xmectng devices which su@ opened by theconmoon 'of the despatchefs; telephone set will: be line Wes.

in d'awing, il desiguales a seningf or despmblg si, ifm conneced bymeans o? line Wies mul. 6 with Waysaaons Lncae lle sending stafm l5limtefy andfm. impulsa relay 8 aclaptem Effi Jp/zal. July @L Mll.

when @peltd in @losecmxl-uc, levers Sand l0 to 59ml in'xples l'mm smidbullrv over #be lim wlw) :is will be mure fully le Smfbod bey@ lvAlflocatml :ub the Sending station are jacks l). md l3 adapted to'eceive plugs ll and Wib. which are connected a telephone S01'. TheSleeve 00inmxc of the jaah' ff, is Mmmm-lied ilu-@ugh the Seomlal'y ofun induction Coil 1li-:mtl a promotor 17 with 'she line `@im (i, while'the sleeve Contact @if th@ jack 13 is @annealed through a condensei'f'and u prmectol' 19 with th@ line wir@ The p springs ol the jacks 'l2 and13 :me aflapted t0 be cn'necte mnmcts ed Wli-h sleeve ca. l#

with the batte y 20 and the, primary of the induction coil l, Whc localcircuit is con* trolled by :l key 2R Comincia 30 and 31 ma closed on llejacks 12 13 when h@ plugs 14; nml 'l5 zur@ emo'fefb und opened when saidplugzgm nssefed. A local signal has a cllcul, ncluli 1g; theCG1'1'tf1CS'c ;l1e jack l2 and the 'b'tte'y 51ml waking Winding; Pf6'foy said relay 8 is als in :L cilL cuit with Suid batte@ adaptcl to be'dosed through. tlm .comi-flew fm slm jack l2.

-ln'mac'l at mmh of 3h13 mf'zfxystutons is :L selecoy mechanismccfmprsing electonmg nets it() and il bmmectsil in seies md im bridge 01lne'liwwies 5 :mel G, nucl espov Sv@ to current impulses from theSending' sqjtm t@ operan@ a circuit-@losing member a'ml'pleflo bridge'an electromaglvxet 43 acr'oss the lnwresl Th operation of theelectromagnet may operate" any suitable signal, Als'obrldged across/thelinewvires auch ofthe Wnystatms is a, elepbone set l5 having :mswefbackmeans associated tbermvtb, but this forms rio part of the pesen:inventioljx amel neel not be more fully desclbml hjfan. ky .l0 loomed ateach of said waysmtons' is adapted vWhbn operated tu connect groun lothe two line Wires for the purjwse of opeming the relzxv tive resistancenormally closed across the line at the sending station isadapted to beintermittently opened by the operation of .the contact levers 9 and 10ot the impulse rela-y 8, said non-inductive resistance serv-- ing as atemporary discharge path for. the graduating devices to preventthe'sticking of the selector magnets.4

Referring now to the operation for signaling the despatcher from one ofthe Way-- stations, it will be assumed that the despatcher has withdrawntheplugs lland 15 from the jacks 12 and 13, thus closing contact-s 30,and 31. The depressionmf the way .station key 50 Will close contactsOand 61 to complete an energizingcircuit for the irnpulse relay 8 at thesending station. This circuit will comprise two current paths, one

of which may be traced as follows: from ground 62 at the waystationthrough resista-'nce 63, 'contact 6l of the key 50, resistance 65.,conductor 66, conductor 67, arrester 68, conductor 69, line wirev 6,retarda- .tion coil 53, one-half retardation coil 51,

'65 tion coil '51, contact levers 9 and 10'. line" battery 7, other halfof retardation coil 51, conductor 70, energizing winding of impulserelay 8, conductor 1 1, contact 72, conductor 73, and contacts 31 onjack 13, to

ground at'74. The other of ,said paths may be traced from ground 6 2,resistance 63, contact 60, resistance 75, conductor 7 6, conductor 77,arrester 78, conductor 79, line wire 5, retardation coil 52, contactlever 1G, Contact 80, nonindctive resistance 5 5, conductorv 81,-onehalf of retardation c oil 51, battery 7, other half of retardationcoil 51, conductor. 70, energizing winding 'of impulse relay 8,conductor? 1, contact 72, conductor 73, and contacts 31 on jack 13, toground at 74. IThe current'in these two paths energiz'es the impulserelay 8 to close contact bet'ween levers 9 and 10, and open the Contact80, thus connecting the battery` 7 'with the line `Wires and interi-uting one yoi the paths` `forlcurrent previous y traced.v

Two current paths are rovided at the sending station, one being t roughthe signal 35,

the other` being throughthe locking wind`l ving 36 of the iin'pulserelay. The path for' the current throng the signal 35 may be traced. asj follows z-froin' one side of the batteryl 7, throught one-halt of' theretarda- 'after the release of the .said

conductor 5 to conductor 85, 'armature of signal 85, winding ot saidsignal, conductor S6, conductor 8 7, Acontacts 30 of `iack 12, conl1luctor88 to lino wire (i, retardation coil 53,

the other halt' of retardation coil 51 to the other side of the battery7. The path for the current through the loclring"'i\'iiiding 36 'of therelay 8 in ay he traced as follows:M

tacts 30 of jack 1.2, conductor 88, to line vwire 6, retardation coilthe other half of.

the retardation coil 51, to the other side ot the battery 7. Theinsertion of the plug 14.- into the jack l2 will interrupt both ofthesvcircuits atthe contacts 30, stop the ringing of the hl'll'ijandconnect the telephone set with the liiie'wires.

Iclaim:- l. In a selective signaling system the coinbination witlrline.f wires having a sending station and a plurality of. waystationsconnected therewith, of impulse transmitting means at vsaid sendingstation including an impulse relay for transmitting signaling iinpulsesover saidline wires, apparatus connecting .devices at said sendingstation, a circuit-closing device at each ofsaid Waystations, anoperating circuit for said iin pulse relay includingsaid circuit-closingdevices and contactsv on said apparatus .conneeting-deviees, a localsignal-and a circuit therefor closed' by said impulse relay andincluding contacts on said apparatus connect ing devices.. 4

2. ln a Selective signaling system the coinbination with :line wireshaving a sending station and a plurality of Waystations conncctedtherewith, of impulse-transmitting means at said sending stationincluding an impulse rela?,l circuit-closing means .and connections oroperating said -rela from any one of said waystations, ra signa at thesending station adapted to yhe controlled hy the operation of saidimpulse relay, and means for maintaining said relayV operatedcircuit-closing means at the'wayst'ation.

3. In a selective signaling system the combination with line' wires.having a sending station and a plurality. of waystations connecte'cltherewith, of fii'npulse-transmitting means at said sending-\'stationincluding an impulse rela circuitsclosing means and connections oroperating said.' relay from any one of said `vv aystations, a signal atthe sending station adapted' toj be controlled by said impulserelay,'`and alocking circuit for impulse,y 'relay adapted `to be4tlos'edl thereby: 1*'

l. n a" selective signaling system the com ross i nineties station enele plurality of `Weystntions conu nestenl therewith, ofimpulse-transmittingineens` aft seid sendin station including an impulserelay, ncircuit-closing ineens 'and connections fer 'operating saidrelay frein any one of. sei Weystetions, ay signal et the sendingstation adapted to be controlled by seid impulse reley, e holdingcircuit for maintaining; seicl, relay energized talter 'the `impulsereley, circuit-,closing Ineens and eonneetions for operating Seial releyfrom any one of seid Weystetions.v e signal et seid sending stationadapted to be'eontrolled by Sinti-impulse relay, a.' holding circuit formaintaining seid relay' energized after the release o thecircuit-closing means at the Weys'tetion9 e, telephone set ede ted to beeonnectecl'wth the line Wires et t ie sencling stetion, und meansoperated in the connection of seid telephone set to the line `Wires iterreleesinv "saifl impulse relay.

6. e se eetive signaling system the eembinetion with line Wires having esending station and e plurality' of Waystetions con.

nente@ therewith, otimpulse transmitting ineens ineluclingnen impulserelay, e1rou1tclosing ineens enti eenneetions for operating rel-ey fromany one oi seicl Wa; stations, s, signal et seid sending; stationeflepteol to b@ .controlled by the operation of seid mpulse relay eholding circuit for maintainjtectson seid second neme ing relayenergized elteithe release of the euit-closingdevices at the Weystation,:t telephone set, plugs and j :Loks for connectingseid set withseicliinewires at the senoli ing station, and contacts on one of senijacks in the circuit of said locking winding', said contacts beingcontrolled in the insertion and Withdrawal of the plugs.

7. In n selective signaling system the combination with line Wires`leaving a sending station and e plurality ef weystations Connectedtherewith; impulse-transmitting ap peretns et seid sending stationincluding an impulse relay, e source of current et said vsendingstation, a signal at seid sending station, e telephone Set, jacks andplugs for connecting seid telephone -set with seid line Wires, contacteon seid jeeks-eontrolled in the insertion end Withdrawal of said plugs,-ci'rcuitclosing devices and connections tor operating said impulse releyfromv any one of seid weystetions, said connections including the lineWires said source ol energy and contacts on one of said jacks, enoperating circuit for said loeel signal controlled by the operation ofSeid impulse relay and including seid source of Dnerg and the con tentsofthe other' el seid jee ts, and e locking circuit for seid impulserelay also including seid source of ener y and the con- I jack. y

ln Witness whereofs I hereunto subscribe my neme this 16th dey of MarchA. D., 1912.

` RALDH, N. HILL.

lNitnesees @n l/l. fAMeeELL, W. l?, HorrMAN.

